(10)Advertising performs such a useful service to our society that we can’t imagine what would happen if there were no advertisement.

On Birth Control
1. 有的人不赞成一个家庭一个孩子的政策
2. 有的人认为一个孩子的政策完全有必要
3. 我的观点
(1)After two decades of a baby boom, China make it a practice in the early 1970s that one family can only have one child. (2)It is quite necessary considering the greater pressure the country feels from the fast increasing number of people.
(3)Yet ever since then, people at home and abroad have voiced different opinions about it.(4) Most people say that we should turn to strict birth control as we are approaching the limit of the number of people the nation can support adequately. (50But there are others who argue that if birth control is imposed on the population, the future of the Chinese would be seriously endangered. (6)They think that very intelligent people would be more likely to have fewer children, and this would bring about a lowering of the general level of intelligence in the population. (7)This argument, does not hold water.(8) For they fail to recognize that in addition to gene, intelligence also depends on an adequate diet, a good education and a decent home environment. (9)And all these things are in danger of being denied as our population is increasing faster than the supply of food, available resources and job opportunities.
(10)If we want to improve the quality of our lives; if we want everyone to be healthy, wealthy and happy; and if we want to see a prosperous, powerful nation in the world, strict birth control is quite essential.

过渡句型

1. It sounds like a good (attractive, palatable) idea (suggestion), but they fail to understand (see, notice)…
2. There is probably an element of truth in the arguments (ideas), but they ignore a more important (basic) fact…
3. Closer examination (analysis), however, suggestions (shows) that this argument (claim, idea) may not be borne out (supported) by the following evidence (facts, examples, statistics).
4. A close (careful) examination (analysis) of these arguments (ideas, suggestions), however, would reveal (suggest, prove) how flimsy (fallacious, groundless) they are.
5. However, logical (sound, forcible)these arguments may be, they don’t make sense (only skim the surface of the problem) when… is viewed the other way (taken into consideration).
6. As opposed to (Contrary to ) the widely (commonly, generally) held idea (belief, view), new studies (facts) challenge (fail to justify) the opinion (view).

叙述理由和分析原因是属于同一类的议论文.所不是后者主要解释某一社会现象或社会问题,而前者则解释作者----我,为什么要干某事或不干某事.
基本结构如下:
PⅠ S1 Topic
    S2 Thesis: My attitude towards it
PⅡ S3 Thesis (more specific)
    S4 Reason 1
    S5 Supporting detail
    S6 Reason 2
    S7 Supporting detail
    S8 Reason 3
    S9 Supporting detail